Cosolvents in printing fluids
AssigneeHewlett-Packard Development Company, L.P.
InventorsGary Byers, Richard Anderson, Mark Choy
Life of this patent
Estimating the term…
Abstract
An aqueous printing fluid, comprising a cosolvent, the cosolvent or mixture of compounds comprising at least one inner salt compound having a sp3-hybridized nitrogen cation and an associated anionic charge either isolated on an N-substituted oxygen anion bound directly to the sp3-hybridized nitrogen cation or isolated among the oxygens of a carboxylate group; a method of avoiding paper curl in printed paper by using the above-described aqueous printing fluid; and a printer system for avoiding paper curl in printed paper through using the above-described aqueous printing fluid.
Claims66
An aqueous printing fluid comprising at least one anti-curl cosolvent, wherein the at least one anti-curl cosolvent comprises at least one inner salt compound having a sp3-hybridized nitrogen cation and an associated anionic charge which is either isolated on an oxygen anion bound directly to the sp3-hybridized nitrogen cation or isolated among the oxygens of a carboxylate group.
A method of avoiding paper curl in printed paper comprising:
- a) preparing an aqueous printing fluid comprising at least one anti-curl cosolvent, wherein the at least one anti-curl cosolvent comprises at least one inner salt compound having a sp3-hybridized nitrogen cation and an associated anionic charge which is either isolated on an oxygen anion bound directly to the sp3-hybridized nitrogen cation or isolated among the oxygens of a carboxylate group;
- b) printing the paper with the aqueous printing fluid;
- and
- c) drying the aqueous printing fluid onto the paper.
A printer system for avoiding paper curl in printed paper comprising:
- an aqueous printing fluid depositing system including an aqueous printing fluid comprising at least one anti-curl cosolvent, wherein the at least one anti-curl cosolvent comprises at least one inner salt compound having a sp3-hybridized nitrogen cation not and an associated anionic charge which is either isolated on an oxygen anion bound directly to the sp3-hybridized nitrogen cation or isolated among the oxygens of a carboxylate group.
Dependencies are inferred from the claim text.